Method of forming overedge or button-hole stitches



(No Model.)

J. W. 11111 11111. METHOD OF FORMING OVEREDGE OR'BUTTON HOLE STITGHES. No. 461,841. Patented 001.27,1891.

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UNITED STATES ATENT Fries.

JOHN V. LUFKIN, OF \(VINOHESTER, MASSACHUSETTS.

METHOD OF FORMING OVEREDGE OR BUTTON-HQLE STITCHES.

SPECIFICATION, forming part of Letters Patent No. 461,841, dated October 27, 1891.

Application filed March 23, 1891.

To all whom it may concern.-

Be it known that I, JOHN -W. LUFKIN, of \Vinchester, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in the Method of Forming an Overedge or Button-Hole Stitch, which will, in connection with the accompanying drawings, be hereinafter fully described, and specifically defined in the appended claim.

My invention relates to an overedge or button-hole stitch, which is practically formed by mechanism; and it consists in a method of forming a button-hole stitch of three threads interlaced with each other through and over the edge of the goods in which the buttonhole is made in the manner hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a representation of an enlarged section, partly in perspective, of a button-hole edge as finished by my improved stitch, and illustrating in sectional elevation the manner of interlacing the threads composing the stitch with each other through and over the edge of the material in which the button-hole is made. Fig. 2 is an edge view, enlarged, showing only the two upper threads, one being carried through the goods and loosely interlaced with the other over the edge of the material, as when forming a part of the completed stitch. Fig. 3 is a similar view, showing the three threads loosely interlaced through and over the edge of the material as they are connected in the formation of the complete stitch.

In the formation of my said stitch I employ two threads A and B above the material, the edge of which is to be finished therewith, and a third thread 0 below the material. The thread A is carried through the body of the goods D, while thread B is carried simultaneously down by the edge of the goods. A loop A, formed of thread A, is at the same time carried laterally to and slightly beyond the edge of the goods 011 the upper side thereof, so that thread B in its passage down by the edge is carried through said loop A. When the two upper threads have been thus connected above and carried below the material and loops thereof have been formed below, as shown in the drawings, then thread C is passed through both said loops of the Serial No. 385,988. (1T0 model.)

upper threads. A loop 0, formed of the under thread 0, after it has been passed through the loops of the upper threads, as described, is seized and held open and in position while the upper threads are being drawn up and until they descend again, when thread B in its descent is also passed through the under loop 0, so held open and in place to receive it. the two loops of threads A and B last formed and is seized and held as before. Thus the formation of the overedge-stitch is completed and repeated in the process of finishing an edge, and thus thread A passes through the goods and is interlaced directly with thread 0 on the under side of the goods and with thread B on the upper side, while thread B passes by the edge-of the material and is interlaced directly with thread A on the upper side or edge of the goods, and is doublyinterlocked with thread 0 on the under side or edge by descending through the loop 0' thereof, and then having another loop 0 passed through its loop, as described and shown. The stitch thus formed, when set or drawn close to the edge, produces a compact and durable covering of the edge and a handsome purl on both sides or edges of a button-hole so finished, which double purl constitutes two re-enforcing lines or bars E, parallel with the edge, and consequently imparts greater lineal strength to the buttonhole and does away with the necessity of putting in the usual additional cord or bar around the button-hole. Another important advantage of this method is that by cutting the loop 0' of the under thread, as may be done automatically, when the stitching of a button-hole or a line of edge-finish is so com pleted, the last stich formed is securely and firmly locked against raveling, as is obvious from an examination of the construction of the stitch, and therefore the end of abuttonoveredge-stitch of three threads, A, B, and O,

Then the thread 0 is again passed through ICO consisting in passing a loop of the thread A a loop of the thread 0 through the loops of through the fabric, drawing a second loop of threads A and B below the fabric, substan- 10 such thread A to the edge of the fabric above tially as described.

the latter passio a loop of the thread 13 7 1 a through the second 100p formed in the thread JOHN A above the fabric and down by the edge'of \Vitnesses:

the fabric and through a loop of the third EUGENE IIUMPI-IREY, thread C below the fabric, and then passing A. M. KINCAID. 

